Boiler.



W. H. WINSLOW.

BOILER.

APPLICATION men DEC.26. 1913.

Patented Nov. 1918.

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teeters.

' To all whom it may concern: I

Be it knownthat ll, WnLLmM ltl. Wrxsnow, a, citizen of the United States, residing at- Chicago, in the county of Cookand State of Illinois, have invented certain new and useful Improvements in Boilers, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

My invention relates to boilers, and more particularly to flash boilers used in connection with automobiles and similar vehicles. The boiler herein described and subsequently claimed is of simple construction and provides for rapid steaming capacity, and, furt-hermore, this boiler is capable of delivering \lry steam to an automobile engine or other steam power device without danger of injury to the boiler parts.

'The boiler of my invention comprises a plurality of units, each unit independent of the other units, except, of course, that each one of the several units is connected with the common source of boiler feed water sup ply and the common steam header or delivery pipe. Each of the units here shown comprises a pair of substantially horizontal headers and a plurality of tubes connecting the same. Tnpractice, some of these tubes connecting the said headers are bent so that expansion of the tubes under the intense heat to which they are subjected will not in any way distort the boiler units. The amount of bend which is given to the tubes becomes progressively greater from the-point of least heat to the point of greatest heat. The tubes, bent as aforesaid, are not elongated but-yield laterally when expansion takes place and thus no strain is communicated to the. boiler headers. In addition to the tubes connect ing the boiler headers, the lower one of the headers, of each unit, is provided with a plurality of circulation tubes which permit circulation of Water through the lower header Specification of Letters Patent.

rotten.

i application filed December 26,1913. aerial No. 808,676.

ably of steel, the several parts being fused together by means of the oXy-acetylene flame in order to form a homogeneous boiler structure. Suitable means is provided for'confleeting the lower header of each unit with a an source of water supply and the upper header with a suitable steam heade These and other features of the boiler of my invention are set forth in the following description and panying drawings, in which- F igure 1 is an elevational view of the boiler embodying my invention, the housing therefor being shown in cross-section; and

Fig. 2 is a top view of the several boiler units and associated parts.

Similar reference numerals refer to similar parts throughout the several drawings.

In F ig. 1, 3 represents the housing for the boiler parts. This housinfgis provided with a suitable wall of fire-proof and heat insulating material, not here shown. Located in the lower part of the housing 3 is a burner l, which receives its fuel from any suitable source through a fuel delivery pipe 5. The as housing 3 is provided with a shoulder 6 at either end, upon which rest the upper steam headers'i of a plurality of boiler units. lEach of said boiler units comprises in addition to an upper header 7', a lower header 8 disposed at and saidtubes, each of said circulation tubes having each of its ends terminating in the lowerheader, at some distance away from the point where the other end thereof joinsthe header. The laterally extending portions of the circulation tubeswithwhich the lowerheader is provided are preferably inclined in order to facilitate circulation through said tubes.

lid

The boiler headers and tubes are prefersubstantially parallel thereto, and a. plurality of tubes 9'connecting the said headers.

It will be noted that the tubes on the right hand side of the boiler units arenot bent and that the tubes on the left hand sides thereof so are bent, and that the amounts of bend of the tubes vary from right to left, as shown.

It will readily be seen that the left hand side of each of the boiler units is subjected to greater heat than the right hand side and that, therefore, it is necessary that the tubes on the left hand side be bent to a greater exte'iit than the tubes on the opposite side.

Each of the headers has communication through a tube 10 with a suitable steam ice header 11, While each of the headers 8 is provided with a tube 12 affording communica tion with a Water header 13 connected with a suitable source of boiler feed water. As before stated, the boiler of my inventibn is 1% of the Water level type, the normal water level .beingindicated by the dotted lines a-a Carried by the lower header 8 and having communicat on therewith, are a plurality of. tile illustrated in the accom- 65 i oblique to their headers 8 in order to facilitate circulation of water therethrough.

When the burner 4 is in operation the heat therefrom impinges upon the left hand portions of the tubes .14, the headers 7 and 8 and the lefthand ones of the vertical tubes 9. As water is heated in'the tubes 14, it rises therein to theleft hand side of the header 8 and tically indestructible. w my boiler there are two distinct circulations,

cold water from the right hand side of the header 8 takes its place. As the heated Water is converted into steam, it rises in the tubes to the header 7 A small portion of water contained in the steam is probably carried into the header 7, due to the turbulent condition of the water and steam within the boiler units, but this water is quickly converted into perfectly dry steam, the steam from the upper headers being delivered to the steam header 11 through tubes 10, as the water in the units is converted into steam and water from the water header takes its place. Water is supplied to the water header 13 through a pump or other suitable water feeding device.

A suitable flue 15 extending from the housing 3 to the rear end of the automobile permits the escape of smoke and unutilized gases of the combustion. The headers 7 and 8 and the tubes carried thereby are preferably fused together by means of the oxy-acetylene flame, thus forming homogeneous integral boiler units which are prac- In the operation of to wit a water circulation through the lower steam header and the tubes 14 and a steam separating circulation through the tubes 9. Dueto the fact that the boiler unit's are independent of each other, any one of the units may be readilyremoved for repairs without disturbing the other units.

While I have illustrated. my invention in the particular embodiments herein shown and described, I do not limit myself to these particular constructions, but desire to claim broadly any equivalents thereof that may suggest themselves to those skilled inthe art.

I What I claim is:

1. A boiler comprising a pair of headers, a plurality of tubes extending between said headers, oneof said headers being provided with a tube permitting water circulation through said last-mentionedheader, said tube having both ends thereof terminating in said header, said other header being disposed above the normal water level.

asssoie ina plane oblique to the plane in which said header is disposed.

3. A boiler comprising a pair of headers, a plurality oftubes extending between said headers, one of said headers being connected with steam delivery devices and the other headers being connected with a source of boiler feed water, said last-mentioned header being provided with a tube permitting circulation of water through said lastmentioned header.

4. A boiler comprising a pair of headers, a plurality of tubes extending between said headers, one of said headers being connected with steam-delivery devices and the other headers being. connected with a source of boiler feed water, said last-mentioned header being provided with a tube permitting circulation of water through said last-mentioned header, said last-mentioned tubes being disposed all in the same plane, some of said tubes being longer than the others, the shorter ones of said tubes being located within the plane bounded by the longer tubes and said last-mentioned header.

5. A boiler comprising a pair of substantially parallel horizontal headers and a plurality of tubes connecting the same, said lower header being provided. with a tube permitting water circulation through said lower header, and a second water circulation tube disposed in substantially the same plane as the first and lying. in the plane bounded by said first circulation tube and said lower header.

6-. A boiler comprising a pair of headers disposed one above the other and a plurality of tubes extending between said headers,- a tube carried by the lower header having both of its ends terminating therein, there being two circulations in said boiler, a water circulation through the lower header and the tube having its ends terminating therein, and a steam separating circulation through the headers and tubes connecting the same.

7. A boiler comprising a pair of headers disposed one above the other and a pluralit of tubes extending between said headers, a tube carried by the lower header having both of 1ts ends terminating therein, there being two clrculations in said boiler, a water ci-rculation through the lower header and the tube having its ends terminating therein,

the headers and tubes connecting the same,

some of said first-mentioned tubes being bent for the purpose set forth.

8. Aboiler comprising a pair of headers ,125 and a steam separating circulation through iaea ia disposed one above the other and a plurality of tubes extending between said headers, a tube carried by the lower header having both of its ends terminating therein, there being two circulations in said boiler, a water circulation through the lower. header and the tube having its ends terminating therein,

and a steam separating circulation through the headers and tubes connecting the same, some of said first-mentioned tubes being bent for the purpose set forth, the amount of bend of said tubes being progressively fgreater from the point of least heat to the rality of tubes connecting said headers, and.

a plurality of circulating tubes having both ends connected to one of said headers, said pthelr header being above the normal water eve 11. In a boiler, a pair of substantially horizontal headers, a plurality of substantially vert cal tubes joining said headers, a plurality of return-bend tubes ha ing bothends connected to oneof said headers, said other header being above the normal water level. 12. Inaboiler,apair of substantially horizontal headers, a plurality of substantially vertical tubes joining said headers, a plurality of return-bend tubes having both ends connected to one of said headers, the other of said headers lying above the normal water level, all of said tubes and headers lying in substantially the same plane.

13. In combination, a pair of headers, tubes joining said headers, some of said tubes being exposed to greater heat than others, said latter tubes being bent from a straight line between the headers to allow of unequal expansion due to heat, said headers being connected solely by said tubes which join said headers.

14. In combination, a pair of headers, tubes joining said headers, said tubes being welded to one of said headers, a furnace for heating part of said tubes to a higher degree of heat than others, a plurality of said tubes being bent from a straight line to, compensate for unequal expansion, said headers being connected solely by said tubes which join said headers.

15. In a boiler, a plurality of sections, a casing inclosing said sections, each section comprising a pair of headers or difl'erent lengths, a plurality of tubes joining said headers, said tubes being welded to said headers to form an integral structure, a part Of said tubes being bowed from a straight line to allow for unequal expansion, and means in said boiler casing to support the entire weight of each section from the longer header of the section.

16. In combination a. steam header, a water header, a plurality of steam separat ing tubes connectingsaid headers, a plurality of tubes joined at both ends to one of said headers, said latter tubes comprising a portion substantially at right angles to the attached header and a portion oblique to the attached header, a water connection for introducing water ad acent sald first portion of said tube and a furnace having means for subjecting the oblique portions to greater heating effect than the right angle portion.

17. A boiler comprising a plurality of" iii-- dividual sections, each'section comprising a pair of headers of different lengths, a plurality of tubes joining said headers, a support for each end of said longer header, said section being supported solely from said longer header and 'a plurality of tubes connected only to one of said headers.

18. A boiler comprising a plurality of individual sections, each section comprising a pair of. headers of difi'erent lengths, aplurality of tubes joining said headers, said tubes being curved or bentto permit ex.-v pansion due to heating, a support for each end of said longer'header, said section being supported solely from said longer header, and a plurality of tubes connected only to one of said headers, all of s id tubes and headers lying in substantially the same plane. I

In witness whereof, I hereunto subscribe my name this 17th day 'of December, A. 1D. 1913.

WILLI 1a. wiusnow.

Witnessesr ALBERT C. BELL, Anens'r H. L Armor. 

